Last week I got a request to support a small GPS tracker. The request is not new to me. It reaches me in several times per year. However, it makes no sense to reinvent the wheel again and again. To minimise the effort for your GPS tracking project on NB-IoT, LoRaWAN, SIGFOX or Weightless P […]
Tag: Antenna
Low cost BLE-GPRS-GPS-gateway
Are we able to make a mint of money with such a low-cost BLE-GPRS-GPS-gateway? If yes then it makes sense to follow a train of thoughts listed in my IoT M2M Cookbook. Everybody can make such a gateway real for less than USD 15. In my IoT M2M Cookbook – excerpt here: http://www.gsm-modem.de/M2M/m2m_iot_cookbook I explained […]
Three axes antenna radiation pattern
I can carry my light antenna radiation pattern test system by car, train or aeroplane. The test reports have the same accuracy like with an electronic chamber. The main difference is price and size. The mobile antenna radiation pattern system is much smaller and cost Euro 14,000 only. To install a chamber will charge much […]
Antennas tests – preparing a PCB for a device in the Internet of Things
Calibration of the VNA on PCB with embedded antenna The calibration of the VNA (Vector Network Analyser) for a PCB with embedded antenna is difficult. The final antenna with all components except the wireless module should be mounted inside the final enclosure. The wireless module will be replaced by the probe. The three calibrations of […]
Antenna Tutorial -Self-made PCB antenna for NB-IoT and GSM for cost US$ 0
Self Made Embedded Antenna Design versus Chip Antenna The wireless Internet of Things has a need for inexpensive wireless modules and antennas. An LTE-Cat-NB1-module (NB-IoT) will cost less than US$ 6 at 1K order. A self-made NB-IoT antenna on PCB could cost US$ 0. Within 60 minutes you will learn which is commercially and technically […]
Update IoT / M2M Cookbook, 3 hour Antenna Tutorial, IoT at Electronica in Munich
This quarter I have a lot of IoT / M2M news for you: 1. Update IoT / M2M Cookbook Since 4 weeks the update is on the server, listed here: http://www.gsm-modem.de/M2M/m2m_iot_cookbook/ More than 12 pages are related to ceramic chip loop antennas for GPS/GLONASS and Bluetooth. Loop antennas have no hand effect and will not […]
GSM/UMTS flex PCB antenna test
GPS antenna selection for a GSM / GPS tracker – DUT 4
Effect of the cut-out zone without copper under the antenna The device under test is a PCB of size 40 mm x 20 mm, again with a GNSS chip antenna designed for small tracking devices. Small mobile GSM/GPS trackers are common for pets, humans or assets. GNSS chip antennas operate as loop antennas which are […]
GSM module on a PCB with a helical GSM antenna – DUT
Are you able to find the mistakes in this GSM module antenna design? The manufacturer labelled it a GSM adapter for the Arduino platform. We have removed the brand name of the GSM module. Delivery notes There were no delivery notes or invoice inside or outside of the package. The customer was really lucky, that […]
GPS antenna selection for a GSM / GPS tracker – DUT 3
Interference of temperature on GPS antenna resonant frequency The device under test is a PCB of size of 40 mm x 20 mm, again with a GNSS antenna for a small tracking device. Small mobile GSM / GPS trackers are common for pets, humans or assets. Chip antennas operate as loop antennas which are magnetic […]